I just bought an EG with GSR brakes. I don't know civics very well yet. The m3 I had before, and the current s2000 I have both have hard brake pedals. The civic I just bought seems soft and then if I apply firm pressure the pedal will slowly sink. I will bleed them today but does this sound like a particular problem?

 

Most likely either air in the line (unlikely; air will be more like a brick wall), old janky fluid (if it's dark, get it changed). It could also be master cylinder with shot seals, pushing fluid past the seals. Or, a bad slave cylinder, pushing fluid out.

Good luck finding your issues.

 

Thanks. So of course I will bleed and replace with dot 4 fluid. Is there something I can do to diagnos the seal issue if it turns outvthe fluid change doesn't solve it?

 

That I'm not too sure of. You'll have to Google it.

 

My seals were junk and no one made a seal kit anymore (they did 10 years ago), I had to just replace the whole MC with a used one. Works great now.

 

Yep. Hascto be this issue. I will replace MC. Thx